Composition of matter for foundry-cores.



'mold preparatory to having ungrrnn STATES PATENT enrich.

CHARLES A. SLEICHER, OF TROY, NEW YORK, ASSIGNOR TO STANDARD COMPOUNDCOMPANY, OF TROY, NEW YORK, A CORPORATION OF NEW YORK.

COMPOSITION OF MATTER FOR FOUNDRY -CORES.

No Drawing.

To all whom it may concern:

Be it known that I, CHARLES A. SLEIGHER, a citizen of the United States,residing at Troy, New York, in the county of Itemselaer and State of NewYork, have invented certain new and useful Improvements in Compositionof Matter for Foundry-Cores, of which the following is a specification.

I have invented a new and useful composition of matter to be used forfoundry cores, of which the following isa specification:

The core commonly'used 1n foundries is made up of sand with rosin as abinder. Because of the high price of rosin the composition is expensive.The core must necessarily be of such composition that it may besubmitted to high temperature or baked while in the form before it isplaced in the the metal poured about it. This requires that the bindershall be of such material as to cause it to attract and hold the otherparts of the composition during and after the baking effect. I havediscovered that petroleum coke or petroleum asphaltum when'mixed withsand in the proper proportion makes a core capable of performing all ofthe re- Specification of Letters Patent.

Patented Oct. 25,1910.

Application filed March 10, 1910. Serial No. 548,470.

quirements of the most efiicient core and at an expense which is verymuch less than any with which I am familiar. The composition of the coreis made up preferably of one part petroleum coke or petroleum asphaltum,either or both, solidified or in liquid form, with thirty parts of sand.I do not, however, limit myself to the proportion given, as it may vary,or to the particular technical ingredients petroleum coke or petroleumasphaltum, as similar by-products of petroleum are included in the termswhich I have used.

What I claim as my invention and desire to secure by Letters Patent is:

1. A core comprising a petroleum byproguct, one part mixed with thirtyparts of san 2. A core composition comprising petroleum coke, petroleumasphaltum and sand.

In testimony whereof I have aflixedmy signature in presence of twowitnesses.

CHARLES A. SLEICHER.

Witnesses:

FRANK H. DEAL, FREDERICK W. CAMERON.

